Usps Postcard Stamps Price Increase 2024. On september 16th, usps adjusted priority mail and ground advantage rates, resulting in increased shipping and mailing costs for certain zip codes. Just recently, in january 2024, the price of a forever stamp went up by 2 cents.

The proposed adjustments, approved by the governors of the. On september 16th, usps adjusted priority mail and ground advantage rates, resulting in increased shipping and mailing costs for certain zip codes.